You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Static Friction

An object of ...

Question

An object of mass $2 k g$ is placed in a frame $(s_{1})$ moving with velocity $10 \to i + 5 \to j m / s$ and having acceleration $5 \to i + 10 \to j m / s^{2}$ . This object is also seen by an observer standing in frame $(s_{2})$ moving with velocity $5 \to i + 10 \to j m / s$ . The net force acting on object with respect to $s_{2}$ frame is

- 10 \to i - 20 \to j N

No worries! We‘ve got your back. Try BYJU‘S free classes today!

10 \to i + 20 \to j N

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

- 5 \to i + 10 \to j N

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Zero

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $10 \to i + 20 \to j N$
Given,

Observer frame have no acceleration

Relative acceleration of object with respect to observer, $a_{r} = (5^i + 10^j) - 0 = (5^i + 10^j) m s^{- 2}$

Force, $\to F = m a s s \times a_{r} = 2 \times (5^i + 10^j) = (10^i + 20^j) N$

Hence, net force on object is $(10^i + 20^j) N$ .

Suggest Corrections

Similar questions

Q. An object of mass

2 k g

moving with constant velocity

10^i m / s

seen in a frame moving with constant velocity

10^i m / s

. What will be the value of 'pseudo force' acting on object in this frame.

Q. A particle is observed from the frames

S_{1}

and

S_{2}

. The frame

S_{2}

moves with respect to

S_{1}

with an acceleration

a

. Let

F_{1}

and

F_{2}

be two pseudo forces acting on the particle when seen from

S_{1}

and

S_{2}

respectively. Which of the following are not possible?

Q. The accelerations of a particle as seen from two frames S₁ and S₂ have equal magnitude 4 m/s².
(a) The frames must be at rest with respect to each other.
(b) The frames may be moving with respect to each other.
(c) The acceleration of S₂ with respect to S₁ may either be zero of 8 m/s².
(d) The acceleration of S₂ with respect to S₁ may be anything between zero and 8 m/s².

A particle is found to be at rest when seen from a frame $S_{1}$ and moving with a constant velocity when seen from another frame $S_{2}$ . Mark out the possible options.

A particle is observed from two frames $S_{1} a n d S_{2}$ . The frame $S_{2}$ moves with respect to $S_{1}$ with an acceleration a. Let $F_{1} a n d F_{2}$ be the pseudo forces on the particle when seen from $S_{1} a n d S_{2}$ respectively. Which of the following are not possible?

Join BYJU'S Learning Program

An object of mass 2 kg is placed in a frame (s1) moving with velocity 10→i+5→jm/s and having acceleration 5→i+10→jm/s2. This object is also seen by an observer standing in frame (s2) moving with velocity 5→i+10→jm/s. The net force acting on object with respect to s2 frame is

The correct option is B 10→i+20→jNGiven, Observer frame have no acceleration Relative acceleration of object with respect to observer,ar=(5^i+10^j)−0=(5^i+10^j)ms−2 Force, →F=mass×ar=2×(5^i+10^j)=(10^i+20^j)N Hence, net force on object is (10^i+20^j)N .