1. SWAMI KESHVANAND INSTITUTE OF TECHNOLOGY, JAIPUR
Department of Mechanical Engineering
Course: B.Tech Semester: II
Subject Code & Name: 205 & Engineering Mechanics
Assignment No. : 10 (Unit-5) Due Date of Submission:
Q-1: (a) Define the following terms: impulse, momentum, work and power.
(b) Write the impulse-momentum equation and mention its applications.
Q-2: A bullet of mass 20 gram is fired horizontally with a velocity of 30 m/s from a gun of mass 10 kg. Find the
velocity with which gun will recoil, distance and time taken in which gun comes to rest. If the resistance to gun
barrel is 2 N.
Q-3: A batsman hit a 0.25 kg ball which is coming horizontally with a velocity 20 m/s. After hitting ball moves
with 50 m/s makes an angle of 30o with horizontal. If impact is only for 0.02 sec. Calculate average force
exerted on the ball by bat.
Q-4: A block of 980 N rest on inclined surface. Inclined surface makes an angle 30o with horizontal. If block
initial velocity is 2 m/sec after 5 sec. What if it speed, if coefficient of friction for surface is 0.25.
Q-5: A bullet of 30 gram is fired horizontally in to a body of 10 kg which is suspended by a string of 1 m
length. Due to impact of bullet string swing by 30o. Find out the velocity of bullet and loss of kinetic energy of
the system.
