A particle of mass \( m \) is projected at an angle a to the horizontal with an initial velocity...

Channel:
PW Solutions
Subscribers:
443,000
Published on ● Video Link: https://www.youtube.com/watch?v=dBCMpO-g6nY


Duration: 2:12
11 views
0

A particle of mass \( m \) is projected at an angle a to the horizontal with an initial velocity \( u \). The work done by gravity during the time it reaches its highest point is
(1) \( u^{2} \sin ^{2} \alpha \)
(2) \( \frac{m u^{2} \cos ^{2} \alpha}{2} \)
(3) \( \frac{m u^{2} \sin ^{2} \alpha}{2} \)
(4) \( -\frac{m u^{2} \sin ^{2} \alpha}{2} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-10-27A block of mass \( m \) is being pulled up a rough incline by an agent delivering constant power...
2022-10-27Two discs, each having mass \( m \), are attached rigidly to the ends of a vertical spring. One ...
2022-10-27A particle is projected along a horizontal field whose coefficient of friction varies as \( \mu=...
2022-10-27Power supplied to a particle of mass \( 2 \mathrm{~kg} \) varies with time as \( P=3 t^{2} / 2 \...
2022-10-27A uniform chain \( A B \) of mass \( m \) and length \( l \) is placed with one end \( A \) at t...
2022-10-27A particle of mass \( m \) moves with a variable velocity \( v \), which changes with distance c...
2022-10-27The blocks \( A \) and \( B \) shown in figure have masses \( M_{A}=5 \mathrm{~kg} \) and \( M_{...
2022-10-27A projectile is fired with some velocity making certain angle with the horizontal. Which of the ...
2022-10-27In the above question, the average power delivered by gravity is (1) \( -m g u \cos \alpha \) (2...
2022-10-27The system shown in figure is released from rest with mass \( 2 \mathrm{~kg} \) in contact with ...
2022-10-27A particle of mass \( m \) is projected at an angle a to the horizontal with an initial velocity...
2022-10-27A particle located in a one-dimensional potential field has its potential energy function as \( ...
2022-10-27A body is moved along a straight line by a machine delivering a constant power. The distance mov...
2022-10-27A massless platform is kept on a light elastic spring as shown in figure. When a particle of mas...
2022-10-27A pump motor is used to deliver water at a certain rate from a given pipe. To obtain \( n \) tim...
2022-10-27A spring is compressed between two toy carts of masses \( m_{1} \) and \( m_{2} \). When the toy...
2022-10-27An object of mass \( m \) slides down a hill of arbitrary shape and after travelling a certain h...
2022-10-27The speed \( v \) reached by a car of mass \( m \) in travelling a distance \( x \), driven with...
2022-10-27A car drives along a straight level frictionless road by an engine delivering constant power. Th...
2022-10-27A mass \( M \) is lowered with the help of a string by a distance \( h \) at a constant accelera...
2022-10-27A moving railway compartment has a spring of constant \( k \) fixed to its front wall. A boy str...


Tags:
pw