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Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is –
28
Aug
Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is – the magnitude of the minimum additional force needed is - Three forces acting on a body are shown in the figure. To have the resultant [...]
A balloon with mass ‘m’ is descending down with an acceleration ‘a’ (where ag). How much mass should be removed from it so that is starts moving up with an acceleration ′a′?
28
Aug
A balloon with mass ‘m’ is descending down with an acceleration ‘a’ (where ag). How much mass should be removed from it so that is starts moving up with an acceleration ′a′? A balloon with mass 'm' is descending down with an acceleration 'a' (where ag). How much mass should be removed from it so [...]
two inclined planes OA and OB having inclinations 30 and 60 with the horizontal respectively intersect each other at O, as shown in figure. A particle is projected from point P with velocity u=10 sqrt(3) m/s along a direction perpendicular to plane OA. If the particle strikes plane OB perpendicular at Q. Calculate.
28
Aug
two inclined planes OA and OB having inclinations 30 and 60 with the horizontal respectively intersect each other at O, as shown in figure. A particle is projected from point P with velocity u=10 sqrt(3) m/s along a direction perpendicular to plane OA. If the particle strikes plane OB perpendicular at Q. Calculate. as shown [...]
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as shown in figure. A particle is projected from point P with velocity u=10 sqrt(3) m//s along a direction perpendicular to plane OA. If the particle strikes plane OB perpendicular at Q. Calculate. ,
two inclined planes OA and OB having inclinations 30^@ and 60^@ with the horizontal respectively intersect each other at O ,
A body, under the action of a force F = 6i – 8j +10k , acquires an acceleration of 1 m/s. The mass of
28
Aug
A body, under the action of a force F = 6i – 8j +10k , acquires an acceleration of 1 m/s. The mass of A body acquires an acceleration of 1 m/s. The mass of under the action of a force F = 6i - 8j +10k August 28, 2020 Category: Chapter 5 - NLM [...]
A person of mass 60 kg is inside a lift of mass 940 kg and posses the button on control panel . The lift starts moving upwards with an acceleration 1 m/ s2. If g= 10 m/s2 the tension in the supporting cable is
28
Aug
A person of mass 60 kg is inside a lift of mass 940 kg and posses the button on control panel . The lift starts moving upwards with an acceleration 1 m/ s2. If g= 10 m/s2 the tension in the supporting cable is The mass of lift is 2000 kg. When the tension in [...]
Three blocks with masses m, 2 m and 3 m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2 m ? (g is the acceleration due to gravity).
28
Aug
Three blocks with masses m, 2 m and 3 m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2 m ? (g is the acceleration due [...]
A particle is projected with a velocity u at angle theta with the horizontal. Calculate the time when it is moving perpendicular to initial direction. Also calculate the velocity at this position
28
Aug
A particle is projected with a velocity u at angle theta with the horizontal. Calculate the time when it is moving perpendicular to initial direction. Also calculate the velocity at this position a particle is projected with a velocity u at angle theta with the horizontal. calculate the time when it is moving perpendicular to [...]
A system consists of three identical masses m1, m2 and m3 connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction=μ). The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is
28
Aug
A system consists of three identical masses m1, m2 and m3 connected by a string passing over a pulley P. The mass m1 hangs freely and m2 and m3 are on a rough horizontal table (the coefficient of friction=μ). The pulley is frictionless and of negligible mass. The downward acceleration of mass m1 is A [...]
Three blocks a, b and c, of masses 4 kg , 2kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between a and b is:
28
Aug
Three blocks a, b and c, of masses 4 kg , 2kg and 1 kg respectively, are in contact on a frictionless surface, as shown. If a force of 14 N is applied on the 4 kg block, then the contact force between a and b is: 2kg and 1 kg respectively are in contact [...]
A man is sitting in an open car which is traveling along a road at a speed of 30 m/s. The man stands up and throws a ball at a speed of 15 m/s relative to himself at an angle of theta to the horizontal. the moment the man throws the ball, the driver of the car begins to accelerate at a constant rate of 17.32 m/s^2, in the direction in which it was initially travelling.
28
Aug
A man is sitting in an open car which is traveling along a road at a speed of 30 m/s. The man stands up and throws a ball at a speed of 15 m/s relative to himself at an angle of theta to the horizontal. the moment the man throws the ball, the driver of [...]
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(b) location of the point of striking of the food package ,
(c) velocity of the package at the time of striking the ground ,
A boy of height 1.5 m ,
A relief food package is dropped from a airplane which is moving horizontal with a velocity of 30 m s ^ −1 at a height h = 50 m. Find the (a) time of flight of the package ,
A shell is projected. from a gun with a muzzle velocity ,
and (d) displacement of the food package. ,
making move on a skateboard due east with velocity 4 m s^-1 ,