Question 5 Here is the top view of a spring-mass system. The spring is free to...
arrow is going towards a for 16-20 14. A 10-kg object experiences the following four forces: a 30-N force to the right a 20-N force to the left; a 40-N force upwards; and a 40-N force downwards. There are no other forces. How much work is done by the net force if the object is moved 5 meters to the right? A) 150 J B) 50J CoJ D)-50J C) 0 J D) -50 J E)-150J 15. How much work must...
1 45 kg is released from rest from the top of a rough ramp, with Mass - coefficient of kinetic friction 0.25 between the block and the incline, of height 3.2 m and length d 5.5 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k 2. 110 N/m. a. Calculate the speed of the mass at the bottom of the ramp? b. How far does...
0,2gm A particle of mass : 3 kg starts from rest at point A and slides around the frictton- less loop-the-loop DBC. Use g 10 m/s2 0,2 a Find the speed of the article at point E. R 1690 Find the-magnitude and direction of the acceleration of the particle at B. Be sure to include the angle between the acceleration vector and the horizontal. Pind the normal force exerted by the track on the particle at-c. (d) After going around...
For this problem, use the system of the spring-Earth-block system, but do not include the wall or track in your system A spring (spring constant k) is near the bottom of a frictionless loop-the-loop (radius R). The left end of the spring is secured to an immovable wall. The right end ofthe spring is used to launch a block (mass m) around the loop-the-loop 1. Explain why the track does no work on the block, even though it exerts a...
(1) Suppose you lift a stone that has a mass of 5.3 kilograms off the floor onto a shelf that is 2 meters high. How much work have you done? Joules (2) Suppose you lift a laptop that weighs 3.2 pounds off the floor onto a shelf that is 4 feet high. How much work have you done? foot-pounds (3) The force on a particle is described by 9x^3−1 pounds at a point xx feet along the x-axis. Find the...
A ball of mass m-3.50 kg is attached to a horizontal massless cord of length l- 2.00 m, and the other end is fixed, as shown. The ball is released from rest from the highest point, A. Peg a. b. What is the speed of the ball when it reaches its lowest point, B? How much work is done by gravity as the ball moves from point A to point B, its lowest point? c. How much work is done...
I need help with the last three questions the Loop A mass m -82 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R 7.8 m and finally a flat straight section at the same height as the center of the loop (17.8 m off the ground). Since the mass would not make it around the loop if released from the height of the top of the loop (do you know why?) it...
A block of mass m-5kg is released from rest at the top of an incline which makes an angle 0= 30° with the horizontal. The coefficient of sliding friction between the block and the plane is P02 d 2 m 0.2. 2m down the incline: After the block has traveled d m5 kg a) How much work has gravity has done on the block? 8 30 b) How much work has the Normal Force has done on the block? c)...
A small block of mass m starts to slide down from the top of a rough (u) hemispherical bowl of radius r, as shown. a. What is the DEQ for the angular displacement dø? b. If the block is making to the bottom of the bowl, how much work is done against friction? c. Find the angular speed of the particle at the bottom of its path. d. What is the maximum angle the block attains before it stops sliding?
An object is suspended from the ceiling by a spring aligned along a vertical x axis, with upward defined as the positive x direction. When the spring is at its relaxed length, the object is at the origin of the axis. The object is pulled down to position −x1, held at rest, and released. Consider its motion from the instant of release until the instant it returns to −x1. Ignore friction, air drag, and the inertia of the spring. part...