Two blocks, m1=1 kg and m2= 2 kg are connected by a light string which passes over a massless and frictionless pulley, as shown in the figure, m moves downward and m) which is lying on a rough surface moves to the right at constant speed. Find the coefficient of kinetic friction between m) and the surface. O 0.5 O 0.3 O 0.2 O 0.6 O 0.7

Objects with masses m1 = 13.0 kg and m2 = 6.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m2falls 1.00 m in 1.37 s, determine the coefficient of kinetic friction between m1 and the table.

A Block Pulled on a Rough Surface A 5.0 kg block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force of 21 N. (a) A block pulled to the right on a rough surface (b) The applied force is at an angle e to the by a constant horizontal force. horizontal. mg mg (For the following, when entering mathematical expression, do not substitute numerical values; use variables only.) (a) Find the speed of the block after it has moved 2.5 m if the surfaces in contact have a coefficient of kinetic friction of 0.16. SOLUTION Conceptualize This example is similar to the example "A Block Pulled on a Frictionless Surface" in Chapter 7, but modified so that the surface is no longer frictionless. The rough surface applies friction force on the block opposite to the applied force. As a result, we expect the speed to be [higher than that found in "A Block Pulled on a Frictionless Surface." Categorize The block is pulled by a force and the rough, so the block d…

Determine the speed v which the 680-kg four-man bobsled must have in order to negotiate the turn without reliance on friction. Also find the net normal force N exerted on the bobsled by the track. 37 -p = 57 m Answers: V = i m/s N = i kN

A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the above figure. The 3.00-kg block is tied to a wall by a horizontal rope. If the coefficient of static friction is 0.800 between each pair of surfaces in contact, what force must be applied horizontally to the 4.00-kg block to make it move?

A block slides down an incline of 30.0∘ to the horizontal at a constant velocity. What is the coefficient of dynamic friction between the block and the incline? Give your answer to 3 significant figures

Below is a diagram showing two blocks joined with a rope that runs over a pulley. The mass m2 is 5.0 kg and theincline is 25°. The coefficient static of friction between m1 and the inclined plane is 0.20.Determine the minimum mass for m1 such that m2 does not start moving downward

QUESTION 2 Which of the following is an accurate statement? O A. It is possible to add a scalar quantity to a vector. O B. Even though two vectors have unequal magnitudes, it is possible that their vector sum is zero. OC. Rotating a vector about an axis passing through the tip of the vector does not change the vector. OD. The magnitude of a vector is independent of the coordinate system used. O E. The magnitude of a vector can be zero even though one of its components is not zero.

A pendulum bob is attached to a string and allowed to swing. Which of the following statements is true with correct reasoning about the magnitude of the force the string exerts on the bob Fs on B and the magnitude of the force Earth exerts on the bob FE on B at the very bottom of the pendulum's swing? FS on B = FE on B because the bob is moving at a constant speed at that point so the forces exerted on it must be balanced. FS on B > FE on B because the string would not be able to support the bob if it were not. FS on B > FE on B because the bob is accelerating upward at the bottom of its swing. Fs on B=FE on B because of Newton's 3rd Law

A block of mass 1.96kg is accelerated across a rough surface by a rope passing over a pulley, as shown in the figure below. The tension in the rope is 14.0N, and the pulley is 10.8cm above the top of the block. The coefficient of kinetic friction is 0.350. Calculate the value of x at which the acceleration becomes zero.