A copper block with mass m = 200 g, is at rest on a glass surface, where the plane makes an angle θθ = 45∘. Assume that the glass surface is frictionless. Calculate the acceleration of the copper block when it is released from rest. Express your result in m/s2. Using the information presented  calculate the force acting on the mass, m = 200 g, just as it is released from the top of the inclined plane, at y = 8.48 m. Express your answer in Newtons.

A cart with mass 15.7 kg is intitally at rest. You get it moving by pushing on the cart at an angle of 0 = 37° as shown above. The magnitude of your force as a function of time is given by: Fyc(t) = Foe-bt, where b = 0.55 s-1 and Fo = 138.1 N. You can assume that the wheels roll perfectly on the ground. What is the speed of the cart when t = 3.3 s? Don't Know Where to Start? ... A Hint About N2L A Hint About the Proces ...... ........................ Vf = 10.25m/s

Shown to the right is a block of mass m resting on a frictionless ramp inclined at an angle to the horizontal. The block is held by a spring that is stretched a distance d after the block is attached to it. E k= e wwwwww ▷ A Write an equation for the force constant of the spring in terms of the variables from the problem statement (m, 0, and d). Use g for the gravitational constant.

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Your answer is partially correct. A 1.3 kg box is initially at rest on a horizontal surface when at t = 0 a horizontal force = (1.8t)î N = (with t in seconds) is applied to the box. The acceleration of the box as a function of time t is given by a = 0 for 0 ≤ t ≤ 2.6s and a (1.38t - 2.1)î m/s² for t > 2.6 s. (a) What is the coefficient of static friction between the box and the surface? (b) What is the coefficient of kinetic friction between the box and the surface? (a) Number 0.367 (b) Number Save for Later i Units Units This answer has no units ✓

A golf ball (m = 67.8 g) is hit by a clab that makes an angle of 25.1° with the horizontal. The ball lands 222 m away on a flat fairway. The acceleration of gravity is 9.8 m/s2. If the golf club and ball are in contact for 3.34 ms, what is the average force of impact? Neglect air resistance. Answer in units of N.

At t = 0, a cart of mass m = 5 kg starts rolling down an incline, making an angle α = 20o with the horizontal. Initially the cart rolls down with no friction, but after traveling a distance of ∆ = 10 m it encounters a rough surface, where the coefficient of friction is k = 0.45. Find the acceleration of the cart along the incline (positive direction is downhill) after it encounters the rough surface.   A.9.8 m/s2  B.9.2 m/s2  C.7.7 m/s2  D.3.6 m/s2  E.3.4 m/s2  F.-0.8 m/s2

A 4.4 kg block located on a horizontal floor is pulled by a cord that exerts a force F = 10 N at an angle theta = 35 degrees above the horizontal, as shown. The floor has a coefficient of kinetic friction µk = 0.1.  What is the magnitude of the acceleration [m/s2] of the block? What is the horizontal speed [m/s] of the block 4.4 seconds after it starts moving?

The small mass m = 3.5 kg and big mass M = 5.8 kg are initially at rest with the small mass at the top of the inclined surface. The small mass will start sliding down the large mass M without friction. The large mass itself is also free to move on a frictionless horizontal surface. Given that h = 4.6 meter, what will the magnitude of the velocity of the mass M when it reaches the horizontal surface? Take g =9.81 m/s? Provide your answer with 2 decimal places. h M

Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.