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Classical Mechanics
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.0degrees with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.0kg, and the coefficient of kinetic friction between the skis and the snow is 0.120. Find the magnitude of the force that the tow bar exerts on the skier
__________N
__________N
Classical Mechanics
What is the frequency of a second pendulum in an elevator moving up with an acceleration of g/2
Classical Mechanics
The rotor blades of a helicopter propel 2500kg of air vertically downwards every second. The air, initially at rest, is accelerated to a speed of 15 m/s. If the helicopter starts to rise with an acceleration of 12.5 m/s, what is the mass of the helicopter?
Classical Mechanics
A fidget spinner that is out of balance is three sided. One arm at each at 120 degrees. At rest it finds the lowest arm in the 5 o'clock position. Assume position 3oclock is 90 degrees at 6 o'clock is 180 degrees, consider 5oclock position at 150degrees. Consider that arm variable "X". Without knowing the precise weights of each arm, what calculation can be used to balance as ratio to "X", the arm at 9 o'clock as "Y". Arm at 1 o'clock "Z"?
Classical Mechanics
how law of conservation is obeyed in the process
if a body on horizontal plane is moved through a distance d under some force
if a body on horizontal plane is moved through a distance d under some force
Classical Mechanics
In a river the flow velocity grows in proportion to the distance from the embankment and reaches a maximum of 2metre per second in the middle. Flow velocity near the embankment is 0.Swimmer has velocity 5 metre per second and he is directed perpendicular to flow. River width =100 metre.Drift is found to be 5n metre.Find 'n'.
Classical Mechanics
Q.Explain shortly calculus of variation.
Classical Mechanics
Can we say that the burning of wood is the conversion of matter into heat?
Classical Mechanics
A balloon is tied up with a wooden piece is moving upward with a velocity of 15 m/s At a height of 300m above the ground the wooden piece is detached from the balloon.How much time will it take to reach the ground?(neglect air resistance)
Classical Mechanics
A stone is projected from ground such that horizontal and vertical components of initial velocity are 10m/s and 20 m/s respectively then at what time are the magnitude of tangential and normal components of acceleration of stone same
