The way force F depends on angle θ .

Question

Want to see the full answer?

Answer 1

Question

Chapter 5, Problem 55P

(a)

To determine

To Calculate: The way force F depends on angle θ .

(b)

To determine

To Compute: The force for different angles.

To Plot: F versus θ

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

A person is doing leg lifts with 3.00-kg ankle weights. The lower leg itself has a mass of 5.00 kg. When the leg is held still at an angle of 30.0° with respect to the horizontal, the patellar tendon pulls on the tibia with a force of 362 N at an angle of 20.0° with respect to the lower leg. Assume the force exerted on the tibia by the femur is the only other significant force acting on the lower leg. a.)Find the magnitude of the force exerted on the tibia by the femur. b.)At what angle below the horizontal does the force exerted on the tibia by the femur act? Enter the angle in degrees where positive indicates right of the horizontal and negative indicates left of the horizontal.

A block of mass is pushed up against a wall by a force P that makes an angle of 0=50°with the horizontal as shown in the figure. The coefficient of static friction between the block and the wall is 0.250. Determine the maximum value for the magnitude of P that allow the block to remain stationary.

Problem 12: A box slides down a plank of length d that makes an angle of 0 with the horizontal, as shown. The kinetic and static coefficients of friction are µk and us, respectively. Omin = 1 Part (a) Enter an expression for the minimum angle at which the box, if initially at rest, will begin to slide. ^^^ 4 acotan(us) atan(us) cos(a) ( ) 7 8 9 cos(p) cos(0) sin(a) 5 6 sin(o) sin(0) 0 α 1 2 3 Mk d t Hints: 0% deduction per hint. Hints remaining: 2 Submit m Hint + * 0 BACKSPACE DEL HOME Feedback END CLEAR I give up! Feedback: 0% deduction per feedback. m 0 Part (b) Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest, and is large enough that it will slide down the plank. the angle Part (c) For a plank of any length, at what angle, in degrees, will the final speed of the box at the bottom of the plank be 0.51 times the final speed of the box when there is no friction present? Assume μ = 0.39.