Call me

Have a Query? We will call you right away.

+91

E.g: 9876543210, 01112345678

We will give you a call shortly, Thank You

Office hours: 9:00 am to 9:00 pm IST (7 days a week)

What are you looking for?

Syllabus

that at half depth where the water barometer reads 10

m. The depth of the lake is:

(a) 15 m (b) infinite

(c) 20 m (d) 10 m

Answer should be : 14m/s

Show that 1Ns/m

^{2}=10 poiseDEAR Experts Can You please help me with the question posted above and please if you don't mind give Detailed Solution

1 The force to be applied on the block moves down without acceleration is ?

a) 10N

b) 15N

c) 5N

d) 20N

2 The ratio of powers needed in the above two cases if the speed of block is same in both cases is ?

a) 1:1

b) 1:2

c) 1:5

d) 2:1

why does frictional force increase when two surfaces in contact are polished beyond a certain limit?

Why do we need to increases Friction?!

I know that without friction no mption is possible..

But why in this case there is increase in friction??

32. A mass 'M' is connected to a rope of length l and , on which an external force 'F, what is the tension force at A?

33. In the above question, what is the tension force at mid-point of the rope?

34. In the above question what is the acceleration of mass M?

(a) sigma/sigma-1

(b)sigma+1/sigma

(c){sigma/sigma-1}^1/3

(d){sigma+1/sigma}^1/3

40 cm and 120 cm respectively below the free surface of water. If FP

and FQ

are the

thrust on respective plates P and Q then find ratio Fp

: FQ

Ans: al^4/36

I am gwtting al^4/9.

Ans: option B.

Can you show pls?

Ans: ootion 4.

I m getting 20m unfortunately.

I guess my method is wrong.

Please ans as soon as possible.

(iii) part

a= 256 m/s^2.

It asks acc? But which tangential or radial or angular...

Pls ans asap.

Q.9. A barometer kept in an elevator reads 76 cm when is at rest. If the elevator goes up with some acceleration, the reading will be

(1) 76 cm

(2) > 76 cm

(3) < 76 cm

(4) Zero

Q2. A block of mass 5 kg is sliding down a rough inclined plane of inclination 37° or sin

^{–1}(0.6) to the horizontal and coefficient of Kinetic Friction $\mathrm{\mu}$ = 0.5. If it started from rest at time t = 0 then at time t = 10 sec, the instantaneous Power developed by the Gravitational force and the frictional force are respectively, (g = 10 m/s^{2})(1) 500 watts and – 400 watts

(2) 300 watts and –200 watts

(3) 600 watts and –300 watts

(4) 600 watts and – 400 watts

1) x1/x2= -m1/m2

2) x1/x2= -m2/m1

3) x1/x2= [m1/m2]^2

4) x1/x2=[m2/m1]^2

Answer with Explain it !!

Q. A rope lies on a table such that a part of it hangs down the table. When the length of hanging is 1/3 Of entire length the rope just begins to slide The coefficient of friction between the rope an

the table is :

(1) 2/3

(2) 1/2

(3) 1/3

(4) 1/6