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physics questions
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Asked by mc8may | 03 Apr, 2023, 03:41: PM
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Equation of cross section of parabolic surface is of type ,  y = k x2 , where k is constant .
 
We are given only the y-coordinate of contact point of block of mass . There is no information about x-coordinate.
 
If we know x-coordinte , then we can find the angle θ between normal to the surface and vertical direction . 
 
Then ' mg cosθ ' is the normal reaction force , i.e. contact force.
 
Hence the answer is (4) insufficient information .
Answered by Thiyagarajan K | 04 Apr, 2023, 01:56: AM
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JEE main - Physics
a boat moves with velocity which is n times less than the river flow velocity. At what angle to the stream direction must the boat move to minimize drifting.    I din understand how dx/d theta=ud/v sec theta tan theta-d sec^2 theta like whr did the addition sec theta come from??? so pls explain tht
Asked by joanmaria916 | 17 Jul, 2023, 11:24: AM
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JEE main - Physics
As shown in Figure, a bullet weighs 0.3 N and moving with a velocity of 400 m/sec hits centrally a 30 N block of wood moving away at 15 m/sec and gets embedded in it. Find the velocity of the bullet after the impact and the amount of kinetic energy lost.
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Asked by theavengers0203 | 22 May, 2023, 11:54: PM
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JEE main - Physics
physics questions
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Asked by mc8may | 03 Apr, 2023, 03:41: PM
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JEE main - Physics
An object moves from y = 12 m to y = 15 m in 5 s. What can be said about the magnitude of displacement and the path length?
Asked by khushpatel9579 | 16 Feb, 2023, 07:50: PM
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JEE main - Physics
A particle start from rest and move along a straight line with uniform acceleration the ratio of time to cover successive distance in the ratio 1:3 is
Asked by yadavashishkryadav | 13 Jan, 2023, 08:38: AM
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JEE main - Physics
If we take a small piece of paper and throw it from a certain height then it is very difficult to anticipate the falling position of the paper... it's uncertain to predict but if we make that same small paper a ball then we can predict the falling position of the paper why so?
Asked by singhshreya102030 | 18 Aug, 2022, 09:09: PM
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JEE main - Physics
if a ball dropped from point P crosses point Q in t seconds. The time taken by it to travel from Q to R,if PQ=QR
Asked by mrudhulaprakashmanda844 | 23 Jul, 2022, 10:26: PM
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JEE main - Physics
A particle is at x= -10m at t= 1 sec. and moving with the velocity of 10m/s..particle is found at x=18m at t=3sec. find Acceleration of particle and position of particle at t=5sec.
Asked by anandprashant2022 | 21 Jul, 2022, 10:52: PM
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JEE main - Physics
a partical is projected up from ground with initial speed v,not. starting from time t=0 to t=t1.then distance and displacement are equal or not
Asked by shalvisaroj | 19 Jul, 2022, 07:01: PM
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JEE main - Physics
A vehicle travels from city A to city B. During the first part of the journey its average speed is whilst in the rest of the journey it is. By what factor is the length of the second part of the journey longer than that of the first part if the average speed calculated for
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Asked by satyamsinghtech367 | 04 Jul, 2022, 09:06: PM
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