QUESTION 13 5 pola If block A is, which has a mass of 10 Kg, moing...
Problem 14.32 < 10 of 10 > Review The block has a mass of 0.81 kg and moves within the smooth vertical slot. It starts from rest when the attached spring is in the unstretched position at A. SB = 0.15 m. Neglect the size and mass of the pulley. Hint: The work of F can be determined by finding the difference Alin cord lengths AC and BC and using UF=FAL (Figure 1) Part A Determine the magnitude of the...
A block with mass m =7.5 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.25 m. While at this equilibrium position, the mass is then given an initial push downward at v = 4 m/s. The block oscillates on the spring without friction. 1) What is the spring constant of the spring? 294 N/m 2) What is the spring constant of the spring? 0.996 Hz 3) After t = 0.3...
A small block on a frictionless, horizontal surface has a mass of 2.60×10−2 kg . It is attached to a massless cord passing through a hole in the surface (the figure (Figure 1)). The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 1.65 rad/s . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 m. Model the block as...
Chapter 5 Questions 13
A block of mass m1 = 3.14 kg on a frictionless plane inclined at angle 0 = 32.7° is connected by a cord over a massless, frictionless pulley to a second block of mass m2 = 2.56 kg hanging vertically (see the figure). (a) What is the acceleration of the hanging block (choose the positive direction down)? (b) What is the tension in the cord? o (a) Number Units (b) Number Units
Block A in (Figure 1) has mass 1.00 kg, and block
B has mass 3.00 kg. The blocks are forced together,
compressing a spring S between them; then the system is
released from rest on a level, frictionless surface. The spring,
which has negligible mass, is not fastened to either block and
drops to the surface after it has expanded. The spring has force
constant 711 N/m and is initially compressed 0.225 m from its
original length.
a.What is the...
A cord is used to vertically lower an initially stationary block of mass M = 10 kg at a constant downward acceleration of g/6. When the block has fallen a distance d = 5.5 m, find the work done by the cord's force on the block.
A cord is used to vertically lower an initially stationary block of mass M = 7.6 kg at a constant downward acceleration of g/5. When the block has fallen a distance d = 4.2 m, find (a) the work done by the cord's force on the block, (b) the work done by the gravitational force on the block, (c) the kinetic energy of the block, and (d) the speed of the block. (Note : Take the downward direction positive).
QUESTION 5 A 1.8 kg block is on a horizontal surface which has a coefficient of kinetic friction equal to 0.284. A force F = 13.4 N is applied at a downward angle A = 12 on the block as shown. What is the acceleration of the block? (include units) E m
A block having a mass of 5 kg
is initially moving at a speed of 10 m/s in the positive
x-direction when it experiences a head on collision with a second
block having a mass of 8 kg that was initially moving in the
negative x-direction with a speed of 3 m/s. After the collision the
velocity of the larger, 8 kg, block is observed to be 5 m/s in the
positive x-direction. The situations before and after the collision...
Block A in the figure has mass mA = 4.20 kg, and block B has mass mB = 2.40 kg. The coefficient of kinetic friction between block B and the horizontal plane is μk = 0.520. The inclined plane is frictionless and at angle θ = 34.0°. The pulley serves only to change the direction of the cord connecting the blocks. The cord has negligible mass. Find (a) the tension in the cord and (b) the magnitude of the acceleration...