CameraIcon

SearchIcon

MyQuestionIcon

1

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

Problem Solving

Block A as sh...

Question

Block A as shown in Fig. weights 1.40N, and block B weights 4.20N. The coefficient of kinetic friction between all surfaces is 0.30. Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B to left at constant speed if A and B are connected by a light, flexible cord passing around a fixed, frictionless pulley.

A

6N

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

B

2.52N

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

C

4N

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

D

7N

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

Open in App

Solution

The correct option is B 2.52N
$\begin{matrix} f_{2} = (1.40 + 4.20) μ = 0.3 \times 5.6 = 1.68 N N o w, m g = 1.40 N f = μ m g = 0.3 \times 1.40 = o .42 N T . f = 0.42 N F = f_{1} + T + f_{2} = (0.42) 2 + 1.68 = 0.34 + 1.68 = 2.52 N H e n c e, o p t i o n B i s c o r r e c t a n s w e r . \end{matrix}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Block A, as shown in the figure weighs

2 N

and block B weighs

6 N

. The coefficient of kinetic friction between all surfaces is 0.25. Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light, flexible cord passing around a fixed, frictionless pulley.

Q. Block A, as shown in the figure weighs

2 N

and block B weighs

6 N

. The coefficient of kinetic friction between all surfaces is 0.25. Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light, inextensible cord passing around a fixed, frictionless pulley.

Q. Block A weight 4N and block weight 8N. The coefficient of kinetic friction is 0.25 for all surfaces. Find the force F to slide B at a constant speed when (a0 A rests on B and moves with it, (b) A is held at rest, and (c) A and B are connected by a light cord passing over a smooth pulley as shown in Fig. , respectively.

Q. In the diagram shown, the blocks

A, B

C

3 kg

4 kg

5 kg

respectively. The coefficient of sliding friction between any two surfaces is

0.25

A

is held at rest by a massless rigid rod fixed to the wall while

B

C

are connected by a light flexible cord passing round a frictionless pulley. The force

F

necessary to drag

C

along the horizontal surface to the left at constant speed is (Assume that the arrangement shown in the diagram,

B

C

A

B

is maintained all through and

g = 10 {m/s}^{2}

Q. Block A weights

4

N and blocks weight

8

N. The coefficient of kinetic friction is

0.25

for all surfaces. Find the force F to slide B at a constant speed when (a) A rests on B and moves with it, (b) A is held at rest, and (c) A and B are connected by a light cord passing over a smooth pulley as shown in Figure, respectively.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Problem Solving

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon