12.33. The lever of a screw jack is 24 in. long. If the screw has six threads per inch, what is the ideal mechanical advantage? Ans. 904

Q: A worker applies an effort force of 68 N to open a window with a resistance force of 760 N what is…

A: Given Resistance force = 760 N Effort force = 68 N we know, Crowbars MA =Resistance force/Effort…

Q: Find Ffrict of the block using the provided diagram. Fgrav = 76 N %3D = 19.1 N Fapp %3! a = 1.0 m/s2

A: Given  Fgrav = 76N  Fapp = 19.1 N   a = 1.0 m/s2

Q: A circular wood table is 4 ft in diameter and 3/4 thick. How heavy is it if the wood weighs 47 lbs…

A:

Q: A 28 m beam is supported at the ends by two walls. The beam weighs 158 N and supports a 483 N air…

A: This question can be solved by balancing of torque on the beam. We will balance the torque about the…

Q: m3 m2

A: Given m1 = 1 kgm2 = 2 kgm3 = 3.5 kg Force acting on block of mass 3.5 kg F = 34 N

Q: : A block of mass 5.5 kg is sitting om pring constant of 595 N/m (refer to th ontal is 210

A: Given:- The mass of the block m=  5.5 kg  The spring constant k = 595 N/m  The inclined angle is 21o…

Q: A 3123kg car is going up the Amerat hill, at angle 15.3, with 3 people inside the car each of 74kg.…

A:

Q: F = 250 1lb 30° 45° F, = 375 lb

A:

Q: The stress in an elastic material is: A Inversely proportional to the materials yield strength (B)…

A:

Q: The value of strength by using 0.2% offset method equal to which of the following? If the applied…

A: Write the given values of this problem. Strain(∆LL)=0.2%∆LL=0.2100∆LL=0.002F=66.5×103 N

Q: What is its mechanical

A: Given data;  machine effort of 10 kgfit is used this effirt to lift the load is;    load=100 kgfFind…

Q: Change the weight Fw of the beam from 8900N to 1998lbs

A: The weight of the beam W=8900 N  W=mg=8900 NThe acceleration due to gravity g=9.8m/s2The mass of the…

Q: Which of the following plots produce a line with slope equal to 6.626 x 10 34 J s? Select all that…

A:

Q: 9. Calculate the ideal mechanical advantage of a wheelbarrow where the length of the whole…

A: Given:The length of the whole wheelbarrow = 1.8mThe length of effort arm length = 1.8m-0.6m=1.2…

Q: 1.6 The power provided by a centrifugal pump is given by P = mgh, where m is mass flow rate, g is…

A:

Q: 5. A 700-N man bringing the ma of the net, comp

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Q: A ladder 9.00 m long leans against the side of a building. If the ladder is inclined at an angle of…

A: Given: length of ladder, L = 9 m Angle with horizontal,A = 75 degree

Q: A grinding wheel 0.32 m in diameter rotates at 2400 rpm

A: a) The angular velocity of grinding wheel is ω=2400rpm2πrad1rev1min60s=251.33rads b) The expression…

Q: The GPE is 5000 J if the mass of the object is 75 kg, what is the height?

A: We know that  GPE= mgh Where m is mass and g is acceleration due to gravity

Q: ulate the mo 400 N point A sho 100 N 3 Figure 2.

A: The moment about point A is

Q: an

A:

Q: The beam is subjected to the distributed load and the couple shown. If Mis slowly increased starting…

A:

Q: the effort required to lift a load of 40 N ?

A: Given; Length,l= 6m effort arm= 3m What is the effort required to lift a LOAD ? load=40N

Q: 400 N. Maam L. f2 m with a for- the applied force

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Q: The rectangular component of forces can be taken by?

A:

Q: If a pulley setup has five supporting ropes, what would be the MA of the setup?

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Q: A. 144 rad/s

A: Given Resistance=11000 ohms Capacitance=2.0*10-6 F Inductance=24.0 H Required frequency to minimise…

Q: what is the stress on a bar with n cross-sectional area of .05 sq in that is subject to a 100,000lb…

A:

Q: Find the density

A:

Q: What is the reading on the micrometer screw gauge?

A: As  shown in figure it seems that there are 50 division on circular scale  , and one rotation of…

Q: Compute cross-product AXB. b)  Use dot product to find the angle between the position bectors A and…

A: Given  that: To determine: a)  Compute cross-product AXB. b)  Use dot product to find the angle…

Q: The dimensions of Power is Select one: O a. ML2T-1 O b. MLT-1 O c. ML2T-2 O d. ML2T-3 O e. MLT-2

A:

Q: An inclined plane is 2.2 m high and 4.2 m long. If the weight of the object to be moved is 4800 N,…

A: We have an inclined plane of height h=2.2 m length l=4.2 m. The weight of the object that is to be…

Q: the mechanical advantage of a crowbar of length 240 cm

A: Given data;  Calculate mechanical advantage of a crowbar of,  length, l= 240 cm If its fulcrum is…

Q: A brass wire is to withstand a tensile force of 350 N without breaking, What minimum diameter must…

A: Given that, Tensile force of brass wire, F = 350 N Tensile strength of brass, E brass = 9.0 x 1010…

Q: What is the ideal mechanical advantage of a wedge with a length of 5 cm and a width of 1.5 cm?

A: Calculating the mechanical advantage of a wedge is fairly simple also. In this illustration, the tip…

Q: ABCD is a rectangle with AB and AD of lengths 2a and a respectively. Forces of magnitudes 2 N, 3 N…

A: Given Data : The length of the side AB of the rectangle is given as 2a. The length of the side AD of…

Q: If the observed AMA for a machine is 1.95 how much effort should be needed to lift a 47.5 N

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Q: A ladder 6.70 m long leans against an exterior wall. If the ladder is inclined at an angle of 74.0°…

A:

Q: The maximum tensi

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Q: An iron wire 1.0 m long with a square cross -section 2.0 mm on a side is used to support a 100 kg…

A: The formula of the Young's modulus is  Y = m g LA ∆L where, m is the mass, L is the length, A is the…

Q: What force must each worker exert to hold up the plank and load?

A: Given data: The length of a plank is: L=15 ft The weight of the plank is: Wp=22 lbs The weight of…

Q: The dimensions of the Young's Modulus is

A: Young's Modulus is the ratio of stress and strain. γ=StressStrainγ=ForceArea×Strain

Q: Power equals work multiplied by time. True False

A:

Q: Working of ballpoint pen?

A: The principle behind the working of a ball pen is surface tension and gravity. The ink gets spread…

Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.