1. A force F = 20 + 10y acts on a particle in y-direction where F is...
Fantastic news! We've Found the answer you've been seeking!
Question:
1. A force F = 20 + 10y acts on a particle in y-direction where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is :
(1) 30 J
(2) 5 J
(3) 25 J
(4) 20 J
2. A force acts on a 30 g particle in such a way that the position of the particle as a function of time is given by x = 3t – 4t + t , where x is in metres and t is in seconds. The work done during the first 4 second is :-
(1) 5.28 J
(2) 450 mJ
(3) 490 mJ
(4) 530 mJ
3. An object of mass 4kg is dropped from a height 20 m. It reaches the ground with speed 16 m/s. Work done on the body by air friction is : (g = 10 m/s )
(1) 288 J
(2) –288 J
(3) 312 J
(4) –312 J
Related Book For
Stats Data and Models
ISBN: 978-0321986498
4th edition
Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
Posted Date: