24. A particle is on a smooth horizontal plane. A force graph is given. Then: F...
A 50.0-kg crate is being pulled along a horizontal, smooth surface The pulling force is 10.0 N and is directed 20.0" above the horizontal What is the acceleration of the crate? An object of mass 25 kg, attached to an ideal massless spring, is pulled across a frictionless surface. If the spring constant is 100 N/m and the spring is stretched by 0.5 m, calculate the acceleration of the object when released.
15. A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30° below the horizontal. If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is: A) 44 N B) 47 N C) 54 N D) 56 N E) 71 N
A 345g hockey puck rests on a flat smooth table. A horizontal force of 125 N acts on it for 2 seconds. The puck slides across the table at the end of that time and then falls off the table. The table's top surface is 85 cm above the deck. Find the a) acceleration of the puck, b) the speed of the puck after the 2 seconds and c) the horizontal distance from the table edge to where the puck...
The 75-kg man pushes on the 150-kg crate with a horizontal force F. The coefficients of static and kinetic friction between the crate and the surface are μs = 0.3 and μk = 0.1, and the coefficient of static friction between the man's shoes and the surface is μ′s = 0.8. What is the greatest acceleration the man can give the crate if the man's acceleration is zero at this instant? I keep getting 1.96 but it says answer is...
The 75-kg man pushes on the 150 kg crate with a horizontal force F The coefficients of static and kinetic friction between the crate and the surface are us=0.3 and uk = 0.18, and the coefficient of static friction between the man's shoes and the surface is u's=0.8. (Figure 1) What is the greatest acceleration the man can give the crate if the man's acceleration is zero at this instant? (Ctri)
4. A small block of mass $m_{1}=4 k g$ is placed at rest on a larger block of mass $m_{2}=6 \mathrm{kg}$. The coefficient of friction between the two block is $\mu=0.3 .$ And the horizontal surface is smooth. A constant force $\mathrm{F}$ is applied on the block. The situation is given in the figure below. a. Find the value of limiting friction between the two blocks. b. What is the maximum acceleration by which the upper block can move c....
Question 22 1 pts A horizontal force, F.acts on a crate weighing 8 N, which moves on a horizontal floor at constant speed. The coefficient of friction between the crate and the surface is 0.25. The work done by F when the crate has moved 12 m is: 00 O2 O10 O24 96 O None of the above Question 23 1 pts A 5.0-kg bowling ball is moving at 6.0 m/s. In order to change its speed to 10.0 m/s,...
5) Little Bobby is pushing a cart and the cart starts to slow down, which free body diagram below is correct for the cart slowing down as Little Bobby continues to pushes. A) F FN F D) FN F applied F applied applied F applied 6) Bob applies a force with a magnitude of |F = 160 N to a box downward at an angle = 60° relative to the horizontal, the box has a weight of 196 N and...
A 10kg mass is initally at rest on a smooth horizontal surface. Calculate the pormal force and acceleration of the mass when a 50N force is applied at the following angles: b. 25° above the horizontal c. 25e below the horizontal aing from finst protod sendio n be systems below, a Atwood's machine b.Atwood's machine with an inclined plane C、The variation ofAtwood's machine with one mass on an inclined plane and the other mass on a horizontal surface. Both surfaces...
The axis of a smooth fixed ciular cylinder of radius R is horizontal. A particle of mass m is attached to a model string and is initially at rest level with the cre of the cylinder with the string draped over the top, whee t slids without frictian as if on a model pulley, s shown in the diagram below. A constant force P of magnitude P pulls the model string downwards. Let 0 denote the angle subtended at the...