A small block of mass m is at rest on a table. The coefficient of friction between the block and the table is mu. (The coefficient of static friction is equal to the coefficient of kinetic friction in this problem.) A horizontal force is applied at t = 0 which has magnitude beta t where beta is a known constant. Find the block's velocity as a function of time. Free Body Diagrams (If appropriate). Law or Definition
A block of mass m = 1.0 kg is placed at rest at a distance 8.15 m (measured along the slope) from the horizontal plane on an incline whose surface makes θ=25o to the horizontal as shown in Figure 2. The coefficient of kinetic friction between the surface where the block is placed and the block is μk = 0.19. After the block starts descending on the slope, find the block’s speed at the time when it reaches the bottom...
As shown below (not to scale), a block of mass starts from rest and slides down a frictionless ramp of height h. Upon reaching the bottom of the ramp, it continues to slide across a flat frictionless surface. It then crosses a "rough patch" on the surface of length d=10m. This rough patch has a coefficient of kinetic friction uK=.1. After crossing the rough patch, the block's final speed is vf=2m/s. What is the height of the ramp? Hint: I...
A block of mass M is pulled over a rough horizontal surface. The block has a coefficient of kinetic friction with the surface of . The block is subject to the normal force, the friction force, the force of gravity, and a force from a rope of magnitude T which pulls up and to the right at an angle of 0 with the horizontal. The box was initially travelling to the right at speed v = 2.7 m. If M...
Assignment:-GCA-CH07A work-KE Theory Pg12 SCALE-UP Table: Station: A block of mass M is launched up a rough plane that makes an angle θ with the horizontal by placing (not attached) it against a massless spring compressed by a distance d and releasing it from rest (see "Initial stage" in the figure at right). The block slides a distance L (>d) up the plane and comes off the plane with an unknown speed v (see "Final stage" in the figure at...
A bullet of mass m is fired into a block of mass M that is at rest. The block, with the bullet embedded, slides distance d across a horizontal surface. The coefficient of kinetic friction is ?k. Part A Find an expression for the bullet's speed vbullet. Part B What is the speed of a 9.0 g bullet that, when fired into a 12 kg stationary wood block, causes the block to slide 5.4 cm across a wood table? Assume...
A block of mass M is pulled over a rough horizontal surface. The block has a coefficient of kinetic friction with the surface of u. The block is subject to the normal force, the friction force, the force of gravity, and a force from a rope of magnitude T which pulls up and to the right at an angle of 0 with the horizontal The box was initially travelling to the right at speed v 1.4 m. If M =8.5kg,...
A block of mass M is pulled over a rough horizontal surface. The block has a coefficient of kinetic friction with the surface of block is subject to the normal force, the friction force, the force of gravity, and a force from a rope of magnitude T which pulls up and to the right at an angle of0 with the horizontal. The box was initially travelling to the right at speed v 1.6 . If M =8.6kg, u=0.10, T=54N, and...
A block of mass M = 4.000 kg is released from rest at the top of an incline of angle θ = 24.0º w.r.t. the horizontal. The coefficient of kinetic friction between the block and the incline is µk = 0.200 and the length of the incline (hypothenuse of the triangle shown below) is L = 6.00 m. ( w.r.t. = with respect to) I am trying to find: a. The work done by the normal force for the complete...
A block of mass m is moving on a smooth surface in the +x-direction with initial Velocity Vi. It slides across a rough segment of width d and coefficient of kinetic friction uk and continues along the smooth surface. Find an expression for its new velocity Vnew