Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

A fire man of mass 60kg is holding a vertical pole the coefficient of static friction between his hands and the pole is 0.5 if he is able to climb up the pole what is the min force with which he should press the pole with his hands.
Asked by arihant7 | 04 Oct, 2010, 11:02: AM
answered-by-expert Expert Answer
When the man climb the pole he has to overcome force and his weight. both are going to oppose his motion as both are acting vertically downwards so total force is
hence he has to exert that force to climb up.
Answered by | 05 Oct, 2010, 10:42: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
Respected Ma'am/Sir please clarify my doubt.
question image
Asked by pranavsrinivas82 | 08 Jan, 2024, 11:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
a block of mass m is pulled along a horizontal smooth surface by a rope of mass m force p applied at one end of rope force which the rope exert on block is
question image
Asked by rame123shshiv | 14 Nov, 2023, 06:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
second law of motion
Asked by kfcispuppy | 30 Sep, 2023, 10:06: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Two blocks of mass m=5kg and M=10 kg are connected by a string passing over a pulley B as shown. Another string connects the centre of the pulley B to the floor and passes over another pulley A as shown. An upward force F is applied at the centre of pulley A. Both the pulleys are massless. Find the acceleration of both the blocks if 1) F=100N.  2)F=500N
question image
Asked by sakethrockzz007 | 14 Aug, 2023, 04:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A block of mass m is placed on a wedge as shown. Find difference between maximum and minimum (a(max) – a(min) ) horizontal rightward acceleration of wedge for which block remains at rest with respect to wedge. (A) 10g/9 (B) g/9 (C) g (D) None of these
question image
Asked by sahuaryanbro1.0 | 01 Jan, 2023, 10:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A force 50 N acts on a body for 10 sec.what will be the change in momentum
Asked by subhankarnanda123 | 20 Dec, 2022, 08:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
answer
question image
Asked by divyanshkr13 | 16 Jun, 2022, 10:25: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
find the velocity in rms
Asked by kashyspalbert91 | 11 Mar, 2022, 04:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
In the arrangement shown in the figure, a heavy pulley of mass M is suspended from a spring of stiffness constant K and the mass m is suspended from a string tightly wound on the pulley. If the mass m is given a small downward displacement and released, find the time period of small oscillations (Take pulley as Disc) and string does not slips on the pulley.
question image
Asked by alkrishna4652 | 24 Feb, 2022, 01:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
what is 2 law of motin
Asked by shreyamishra270304 | 04 Aug, 2021, 08:32: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×