An object of mass 80 kg is pulled on a horizontal rough g...
An object of mass 80 kg is pulled on a horizontal rough ground by a force of 500 N. Find the coefficient of static friction.
[g = 10 ms-2]
0.8
0.4
1.0
0.6
Correct answer is D
coefficient of friction
= \(\frac{F}{R}\)
=\(\frac{F}{mg}\)
= \(\frac{500}{80 \times 10}\)
= 0.625
Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is...
What is X in the equation given below? 42He + 94Be → 126C + X ...
Which of the following has the highest surface tension? ...
ML2T-2 is the dimensional formula for ...
A capacitor of capacitance 25μF is connected to an a.c. power source of frequency 200 Hz. Calcula...
Which of the following features of an electrostatic line of force is not correct? ...
Which of the following statements is NOT true of the image in a plane mirror? The image is ...