A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled 3 m is
(a)
4 J
(b)
2.5 J
(c)
5 J
(d)
6.5 J
A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled 3 m is
(a)
4 J
(b)
2.5 J
(c)
5 J
(d)
6.5 J
Question ID - 50884 | SaraNextGen Top Answer
A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled 3 m is
(a)
4 J
(b)
2.5 J
(c)
5 J
(d)
6.5 J
|
A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled 3 m is |
|||
|
(a) |
4 J |
(b) |
2.5 J |
|
(c) |
5 J |
(d) |
6.5 J |
1 Answer
127 votes
Answer Key / Explanation : (d) -
= Area under F-x graph
K.E = W = 
(3+2) 
(3−2) + 2
2
=2.5 + 4
= 6.5 J
127 votes
Answer Link
127