A block of mass \( 2 \mathrm{~kg} \) is free to move along the \( x \)-axis. Initially, it is at...

Channel:
PW Solutions
Subscribers:
449,000
Published on ● Video Link: https://www.youtube.com/watch?v=PgIJSzEYElI


Duration: 3:19
5 views
0

A block of mass \( 2 \mathrm{~kg} \) is free to move along the \( x \)-axis. Initially, it is at rest and from \( t=0 \) onwards it is subjected to a time-dependent force \( F(t) \) in the \( x \)-direction. The force \( F(t) \) varies with \( t \) as shown in the figure. The kinetic energy of the block after \( 4.5 \mathrm{~s} \) is
(a) \( 4.50 \mathrm{~J} \)
(b) \( 7.50 \mathrm{~J} \)
(c) \( 5.06 \mathrm{~J} \)
(d) \( 14.06 \mathrm{~J} \)
πŸ“²PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-11-16A body is displaced from \( x=4 \mathrm{~m} \) to \( x=2 \mathrm{~m} \) along the \( x \)-axis. ...
2022-11-16The potential energy of a particle is given by formula \( U=100-5 x+100 x^{2} \), where \( U \) ...
2022-11-16In Column I, some statements are given related to work done by a force on an object while in Col...
2022-11-16A juggler keeps four balls in air. He throws each ball vertically upwards with the same speed at...
2022-11-16One end of a light spring of spring constant \( k \) is fixed to a wall and the other end is tie...
2022-11-16The force on a particle of mass \( m \) placed on smooth horizontal surface is \( F=\left(2 x^{2...
2022-11-16Block \( A \) has no relative motion with respect to wedge fixed to the lift as shown in figure ...
2022-11-16The potential energy of a particle of mass \( 5 \mathrm{~kg} \) moving in \( x y \)-plane is giv...
2022-11-16In position \( A \), kinetic energy of a particle is \( 60 \mathrm{~J} \) and potential energy i...
2022-11-16If kinetic energy of a body is increasing then (a) work done by conservative forces must be posi...
2022-11-16A block of mass \( 2 \mathrm{~kg} \) is free to move along the \( x \)-axis. Initially, it is at...
2022-11-16A particle of mass \( 1 \mathrm{~g} \) executes an oscillatory motion on the concave surface of ...
2022-11-16Write short notes on Radula,
2022-11-16Shew that \[ (x+y+z)^{3}27(y+z-x)(z+x-y)(x+y-z) \]
2022-11-16A pendulum of mass \( 1 \mathrm{~kg} \) and length \( l=1 \mathrm{~m} \) is released from rest a...
2022-11-16The potential energy of a \( 1 \mathrm{~kg} \) particle free to move along the \( x \)-axis is g...
2022-11-16A block \( A \) of mass \( 45 \mathrm{~kg} \) is placed on another block \( B \) of mass \( 123 ...
2022-11-16Solve \[ x^{2}+x y+y^{2}=84, x-\sqrt{x y}+y=6 \]
2022-11-16Which of the following statements are incorrect. (i) Genetic engineering is also called recombin...
2022-11-16Find the algebraic sum of three times the square of \( x \), twice the cube of \( x,-x^{3}+x-2 x...
2022-11-16A smooth chain \( A B \) of mass \( m \) rests against a surface in the form of a quarter of a c...