MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Normal Force

Two blocks of...

Question

Two blocks of masses 5 kg and 10 kg are connected by a massless spring. A force of 20 N acts on 10 kg mass as shown. At the instant, 5 kg mass has an acceleration of 0.4 $m s^{- 2}$ the acceleration of 10 kg mass is

A

2.9 ms^-2

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

B

1.8 ms^-2

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

C

3.5 ms^-2

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

D

1 ms^-2

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

Open in App

Solution

The correct option is B
1.8 ms^-2

$let the spring force at that instant is F_{s p} F B D o f 5 k g F_{s p} = 5 a_{1} . . . . . . . . . . [∴ F_{n e t} = m a] = 5 \times 0.4 = 2 N F B D o f 10 k g F_{s p} = 20 - F_{s p} = 20 - 2 = 18 N A s F_{s p} = m a, 18 = 10 a_{2} \Rightarrow a_{2} 1.8 m s^{- 2} ∴ A c c e l e r a t i o n o f 10 k g m a s s a t t h e i n s t a n t g i v e n i s 1.8 m s^{- 2}$

Suggest Corrections

thumbs-up

2

Similar questions

Q. The masses of

10 k g

20 k g

respectively are connected by a massless spring. A force of

200 N

20 k g

mass. At the instant shown, the

10 k g

mass has an acceleration of

12 m s^{- 2}

, what is the acceleration of

20 k g

Q. Two masses of

10 k g

20 k g

respectively are tied together by a massless spring. A force of

200 N

20 k g

mass as shown in figure. At the instant shown, the acceleration of

10 k g

mass is instant shown, the acceleration of

10 k g

12 m / s^{2}

, the the acceleration of 20 kg mass.

10 k g

20 k g

are connected by a massless spring.A force of

200 N

20 k g

mass . At the instant when the

10 k g

mass has an acceleration

12 m / s^{2}

the energy stored in the spring

(k = 2400 N / m)

Q. A block of mass

5 K g

is placed over a block of mass

10 K g

,as shown in Fig. The coefficient of friction between the two block is

μ

=0.5. An external force of

80 N

is exerted on a

10 K g

block. Find the acceleration of both the blocks.

M_{1} = 5 k g

M_{2} = 10 k g

are connected at the ends of an inextensible string passing over a frictionless pulley as shown. When the masses are released, then the acceleration of the masses will be:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Losing Weight Using Physics

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon