Body A in the figure weighs 110 N, and body B weighs 86 N. The coefficients of friction between A and the incline are μs = 0.48 and μk = 0.22. Angle θ is 50°. Let the positive direction of an x axis be up the incline. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline?

If a single constant force acts on an object that moves on a straight line, the objects velocity is a linear function of time. The equation v = vi + at gives its velocity v as a function of time, where a is its constant acceleration. What if velocity is instead a linear function of position? Assume that as a particular object moves through a resistive medium, its speed decreases as described by the equation v = vi kx, where k is a constant coefficient and x is the position of the object. Find the law describing the total force acting on this object.

If the vector components of the position of a particle moving in the xy plane as a function of time are x(t)=(2.5ms2)t2i and y(t)=(5.0ms3)t3j, when is the angle between the net force on the particle and the x axis equal to 45?

Body A in the figure weighs 96 N, and body B weighs 16 N. The coefficients of friction between A and the incline are u, = 0.59 and uk = 0.25. Angle 0 is 28°. Let the positive direction of an x axis be up the incline. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline? Frictionless, massless pulley (a) Number i Units (b) Number -4.39 Units m/s^2 (c) Number i Units m/s^2

A 129 kg crate is sitting at the top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal. Someone gives the crate a quick shove to get it moving, after which it slides down the ramp without any further assistance. The coefficient of kinetic friction between the crate and the ramp is ls = 0.23. What is the magnitude of the acceleration (in m/s?) of the crate?

An elevator cab is pulled upward by a cable.The cab and its single occupant have a combined mass of 2000 kg.When that occupant drops a coin, its acceleration relative to the cab is 8.00 m/s2 downward.What is the tension in the cable?

Body A in the figure weighs 96 N, and body B weighs 16 N. The coefficients of friction between A and the incline are µs = 0.59 and Hk = 0.25. Angle 0 is 28°. Let the positive direction of an x axis be up the incline. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline? Frictionless, massless pulley (a) Number i Units (b) Number Units (c) Number i Units >

A child is pulling a red wagon full of toys (total mass is 8.35 kg). His pull is 34 N in magnitude and at 23 degrees above the horizontal. He pulls his wagon at a constant acceleration (could be positive or negative). The coefficient of friction between the wagon's wheels and the ground is 0.33. What is the wagon's acceleration?

A block is sliding down a ramp at an angle of 0 = 16° to the horizontal. Its initial speed is 2.8 m/s. After sliding 13.6 m along the ramp, it comes to a rest. What is the coefficient of kinetic friction, µ., between the block and the ramp? Ө

A 132 kg crate is sitting at the top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal. Someone gives the crate a quick shove to get it moving, after which it slides down the ramp without any further assistance. The coefficient of kinetic friction between the crate and the ramp is µs = 0.24. What is the magnitude of the acceleration (in m/s²) of the crate?