The time dependence of the position of a particle of mass \( m=2 \) is given by \( \vec{r}(t)=2 ....

Channel:
PW Solutions
Subscribers:
451,000
Published on ● Video Link: https://www.youtube.com/watch?v=TGcBJlQW4y8


Duration: 2:20
0 views
0

The time dependence of the position of a particle of mass \( m=2 \) is given by \( \vec{r}(t)=2 t \hat{i}-3 t^{2} \hat{j} \). Its angular momentum, with respect to the origin, at time \( t=2 \) is:
\( \mathrm{P} \)
(1) \( 48(\hat{i}+\hat{j}) \)
(2) \( 36 \hat{k} \)
(3) \( -34(\hat{k}-\hat{i}) \)
(4) \( -48 \hat{k} \)


๐Ÿ“ฒPW App Link - https://bit.ly/YTAI_PWAP
๐ŸŒPW Website - https://www.pw.live



Other Videos By PW Solutions


2024-01-22A thin uniform bar of length \( \mathrm{L} \) and mass \( 8 \mathrm{~m} \) lies on a smooth hori....
2024-01-22Assertion: The earth is slowing down and as a result the moon is coming nearer to it. Reason: Th....
2024-01-22A bob of mass \( m \) attached to an inextensible string of length \( l \) is suspended from a v....
2024-01-22Assertion: It is harder to open and shut the door if we apply force near the hinge. Reason: Torq....
2024-01-22A particle of mass \( 2 \mathrm{~kg} \) is moving such that at time \( t \), its position, in me....
2024-01-22A rectangular solid box of length \( 0.3 \mathrm{~m} \) is held horizontally, with one of its si....
2024-01-22To mop-clean a floor, a cleaning machine presses a circular mop of radius \( R \) vertically dow....
2024-01-22In the figure shown there are two blocks \( A \) and \( B \) of same mass connected with pulley ....
2024-01-22A uniform chain of length \( l \) and mass \( m \) overhangs on a rough horizontal table with it....
2024-01-22A slab is subjected to two forces \( \vec{F}_{1} \) and \( \overrightarrow{F_{2}} \) of same mag....
2024-01-22The time dependence of the position of a particle of mass \( m=2 \) is given by \( \vec{r}(t)=2 ....
2024-01-22A small block of mass \( 20 \mathrm{~kg} \) rests on a bigger block of mass \( 30 \mathrm{~kg} \....
2024-01-22A cubical block of side \( 30 \mathrm{~cm} \) is moving with velocity \( 2 \mathrm{~ms}^{-1} \) ....
2024-01-22Shown in the figure is rigid and uniform one meter long \( \operatorname{rod} A B \) held in hor....
2024-01-22Four point masses, each of mass \( m \), are fixed at the corners of a square of side \( l \). T....
2024-01-22A slender uniform rod of mass \( M \) and length \( l \) is pivoted at one end so that it can ro....
2024-01-22The machine as shown has 2 rods of length \( 1 \mathrm{~m} \) connected by a pivot at the top. T....
2024-01-22A block of mass \( m \) lies on wedge of mass \( M \). The wedge in turn lies on smooth horizont....
2024-01-22An object of mass \( M \) is gently placed on a horizontal conveyor belt, which is moving with u....
2024-01-22A body of constant mass \( m=1 \mathrm{~kg} \) moves under variable force \( F \) as shown. If a....
2024-01-22A smooth track in the form of a quarter circle of radius \( 6 \mathrm{~m} \) lies in the vertica....