A particle of mass \( 1 \mathrm{~kg} \) slides in a horizontal circle of radius \( 20 \mathrm{~m...

Channel:
PW Solutions
Subscribers:
458,000
Published on ● Video Link: https://www.youtube.com/watch?v=oe86Z092oz8


Duration: 2:44
8 views
0

A particle of mass \( 1 \mathrm{~kg} \) slides in a horizontal circle of radius \( 20 \mathrm{~m} \) with a constant speed of \( 1 \mathrm{~m} / \mathrm{s} \). The only forces in the vertical direction acting on the particle are its weight and the normal reaction, however no information is available about the forces in the horizontal plane. Over a period of time whole energy dissipated due to work done by friction is conducted to ground and simultaneously radiated to surround. If the coefficient of friction is \( \mu=0.5 \). Then (Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) ) :
(A) The magnitude of frictional force acting on the block must be \( 5 \mathrm{~N} \).
(B) The frictional force must be in tangential direction.
(C) The frictional force must be towards the centre.
(D) No comment can be made about the direction or magnitude of friction based on the given data.
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-11-16Recapitulation theory को लॉं आफ बायोजेनेसिस कहा गया : (A) Haeckel द्वारा (B) Lamarck द्वारा (C) ...
2022-11-16If the length of a rectangle is decreased by \( 20 \% \), then by what percent should the width ...
2022-11-16Express the following relations in the exponential form: \[ \log _{125} 5=\frac{1}{3} \]
2022-11-16In fluorite structure, the coordination number of cations is
2022-11-16A semiconductor has an electron concentration of \( 6 \times 10^{22} \) per \( \mathrm{m}^{3} \)...
2022-11-16What happens when Beryllium carbide reacts with water.
2022-11-16When the centre of earth is at a distance of \( 1.5 \times 10^{11} \mathrm{~m} \) from the centr...
2022-11-16क्या होता है? जब- फीनॉल की क्रिया \( \mathrm{NaOH} \) से कराते हैं।
2022-11-16A straight conductor \( 1 \mathrm{~m} \) long moves at right angle to both its length and a unif...
2022-11-16Why are the elements of group 1 called the alkali metals?
2022-11-16A particle of mass \( 1 \mathrm{~kg} \) slides in a horizontal circle of radius \( 20 \mathrm{~m...
2022-11-16A thin spherical shell and a thin cylindrical shell (closed at both ends) have same volume. Both...
2022-11-16If half-life of a radioactive element is 3 hours, after 9 hours its activity becomes (A) \( 1 / ...
2022-11-16From what expression must the sum of \( 5 a^{2}-2,3 a+a^{2} \), and \( 7-2 a \) be subtracted to...
2022-11-16There are two unlabelled microscopic slides showing transverse sections of root and stem of a di...
2022-11-16A sphere of mass \( m \) moving with velocity \( u \) hits another stationary sphere of same mas...
2022-11-16A metal cylinder of mass \( 0.5 \mathrm{~kg} \) is heated electrically by a 12 W heater in a roo...
2022-11-16Two bodies \( A \) and \( B \) have thermal emissivities of \( 0.01 \) and \( 0.81 \), respectiv...
2022-11-16अनुचुम्बकीय पदार्थों की चुम्बकीय प्रवृत्ति किस कोटि की होती है?
2022-11-16Assertion (A): Assertion (A): Cross-pollination results in healthy and viable offsprings. Reason...
2022-11-16The angle between the magnetic meridian and geographical meridlan is called (A) angle of dip (B)...