15.51 A 40-lb box slides from rest down the smooth ramp onto the surface of a 20-lb cart. Determine the speed of the box at the instant it stops sliding on the cart. If someone ties the cart to the ramp at B, determine the horizontal impulse the box will exert at C in order to stop its motion. Neglect friction and the size of the box. 15 ft B A

15.51 A 40-lb box slides from rest down the smooth ramp onto the surface of a 20-lb cart. Determine the speed of the box at the instant it stops sliding on the cart. If someone ties the cart to the ramp at B, determine the horizontal impulse the box will exert at C in order to stop its motion. Neglect friction and the size of the box. 15 ft B A

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A smooth can C, having a mass of 5 kg, is lifted from a feed at A to a ramp at B by a rotating rod. The rod maintains a constant angular velocity of θ˙ = 0.5 rad/s, Neglect the effects of friction in the calculation and the size of the can so that r=(1.2cos⁡θ)m. The ramp from A to B is circular, having a radius of 600 mm. (a) Determine the magnitude of the force which the rod exerts on the can at the instant θθ = 30∘∘. Express your answer to three significant figures and include the appropriate units.
A block A of 60.0 lb is connected to a block B of 10.0 lb by means of a rope and an ideal pulley. The system is released from rest. Between block A and the surface, there is a coefficient of kinetic friction of 0.10. Block A has descended 5.00 ft. At this moment, determine: a. The displacement of block B.b. The magnitude of the tension in the rope.c. The speed of block B.d. The speed of block A.
A hammer head H having a weight of 0.26 lb is moving downwards at 40 ft/s when it strikes the head of a nail of negligible mass and drives it into a block of wood as shown. Find the impulse on the nail if it is assumed that the grip at A is loose, the handle has a negligible mass, and the hammer stays in contact with the nail while it comes to rest. [Show work fast , Don't copy]
(a) Two blocks are joined by an inextensible cable as shown in Figure. If the system is released from rest, determine the velocity of block A after it has moved 2 m by using the data given. Assume that the coefficient of kinetic friction between block A and the plane is ?k = 0.25 and that the pulley is weightless and frictionless.
Block A has a mass mA and is attached to a spring having a stiffness k and unstretched length l0. If another block B, having a mass mB, is pressed against A so that the spring deforms a distance d, show that for separation to occur it is necessary that d > 2µkg(mA + mB )/k, where µkis the coefficient of kinetic friction between the blocks and the ground. Also, what is the distance the blocks slide on the surface before they separate?
A ball of mass (m) is connected by a light string of length (L) to a frictionless pivot point P and swings as a pendulum as shown in Fig. (1). The ball is released from rest at point A when the string makes an angle of e with vertical. Determine; 1) The velocity of the ball as it passes through point B. 2) The tension TA in the string at A. 3) The tension Te in the string at B.
3.) The thrust of a 500-lb rocket sled varies with time as shown below. If the sled starts from rest and travels along a straight, horizontal track, determine its velocity when the rocket burns out. Assume negligible friction.
2. In the system of connected bodies. The coefficient of kinetic friction is 0.20 under bodies B and C. determine the acceleration of each body and the tension in the cord supporting A.
The slider of mass m is released from rest in position A and slides without friction along the vertical‐plane guide shown. Determine the height h such that the normal force exerted by the guide on the slider is zero as the slider passes point C. For this value of h, determine the normal force as the slider passes point B.
Given a small disk (4-Kg) sliding on top of a smooth table which is connected to an elastic cord having a tension of 8r N (r radial position of the small disk is in meters). If we gave the disk a starting velocity of 5 m/s in the transverse direction when it is at r = 1.5 m, calculate: a- the magnitudes of the radial and transverse components of its velocity when r = 3 m? b- the maximum value of r reached by the disk.
Block A has a mass of 2 kg and slides into an open ended box B with a velocity of 2 m/s. If the boxB has a mass of 3 kg and rests on top of a plate P that has a mass of 3 kg, determine the distancethe plate moves after it stops sliding on the floor. Also, how long is it after impact before allmotion ceases? The coefficient of kinetic friction between the box and the plate is μk=0.2, andbetween the plate and the floor μ'k=0.2. Also, the coefficient of static friction between the plateand the floor is μ's = 0.5
The block B start from rest and slides on the 30 wedge A , which is supported by a horizontal surface . Neglecting friction