MyQuestionIcon

1

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

Variation of G Due to Height and Depth

Two masses A ...

Question

Two masses $A$ and $B$ of $10 k g$ and $5 k g$ respectively, are connected with a string passing over a frictionless pulley fixed at the corner of a table as shown in figure, the coefficient of friction of $A$ with the table is $0.2$ . The minimum mass (in $k g$ ) of $C$ that may be placed on $A$ to prevent it from moving is:

Open in App

Solution

Given: $m_{A} = 10 k g, m_{B} = 5 k g, μ = 0.2$ (between block $A$ and ground)
Since given system is in equilibrium

From $F B D$ of block $B$
$∴ T = m_{B} g = 5 g = 50 N$

For combination of block $A$ and $C$
Friction force between block $A$ and ground $= μ (m_{A} + m_{C}) g = 0.2 (10 + m_{c}) g$

It should be balancing tension acting on them as shown in $F B D$
$∴ 0.2 (10 + m_{c}) g = 50$
$10 + m_{c} = 25$
$m_{c} = 15 k g$

Final Answer: 15 kg

Suggest Corrections

thumbs-up

40

Similar questions

Q. Two masses A and B of

30

10

kg are connected with a string passing over a frictionless pulley fixed at the corner of a table, as shown in figure. The coefficient of friction between the table and block is

0.2

. What is the minimum mass of C that may be placed on A to prevent it from moving?

A

B

10 k g

5 k g

respectively are connected with a string passing over a friction less pulley fixed at the corner of a table as shown. The coefficient of static friction of

A

0.2

. The minimum mass of

C

that may be placed on

A

to prevent it from moving is

A

B

10 K g

5 K g

respectively are connected with a string passing over a friction less pulley fixed at the corner of a table as shown in figure. The coefficient of friction of

A

0.2

.The minimum mass of

C

that may be placed on

A

to the prevent it from moving is equal to:

A

B

5 kg

6 kg

are connected by a string passing over a frictionless pulley fixed at the corner of table as shown in figure. The coefficient of friction between

A

and the table is

0.3

. The minimum mass of

C

that must be placed on

A

to prevent it from moving is equal to:

(Take = 10 {m/s}^{2})

A

B

5 kg

6 kg

are connected by a string passing over a frictionless pulley fixed at the corner of table as shown in figure. The coefficient of friction between

A

and the table is

0.3

. The minimum mass of

C

that must be placed on

A

to prevent it from moving is equal to:

(Take = 10 {m/s}^{2})

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Variation of G Due to Height and Depth

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon