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A body of mass 2 kg thrown vertically upwards with a velocity 40 m/s comes to instantaneous rest at a height 50 m. Is there any other force (other than gravitational force), if yes then calculate the value. Ans) Yes , a force due to air drag will be there , to calculate this wehave to first find work done by air drag..Acc. To work-energy theoremWgravity + Wair drag = change in K.E.-Mgh +Wair drag = change in K.E.Wair drag =change in K.E. +mgh=[0-1/2mu2] +mgh = -1/2 x 2 x (40)2 + 2x 10 x 50 = -1600+1000 = -600Jnow w.d. = F x sF= -600/50 = -12N
Describe Kirchoff's Voltage Law? Ans. It describe, " the sum of the Voltage drops around a DC series circuit same to the applied voltage or source. E = E 1 + E 2 = E 3 .
Describe Acceleration In physics, acceleration is the rate at that the velocity of a body changes with time. In common, velocity and acceleration are vector quantities, along w
Q Define threshold frequency? The minimum frequency of incident radiation lower which the photoelectric emission isn't possible completely but high the intensity of incident r
Use the numerical integration scheme discussed in class to compute the area moment of inertia of the circular section with a hole as shown below. For mapping, use 4-node element
calculate the amplitude of wave of y= (0.045m) sin x (5.2t+4.0x)
(a) Equation (3) may be viewed as a formalism of synaptic plasticity - the synapse is able to change in strength in response to either use or disuse of it. We can observe the s
A boy is standing on an elevator which is travelling downward with constant velocity of 30 meters per second. The boy throws a ball vertically upward with velocity of 10 meter
Five people are playing tug-of-war. Anders and Alyson pull to the right with 45 N and 35 N, respectively. Calid and Marisol pull to the left with 53 N and 38 N, respectively.
The image of a candle is produced by a convex lens on a screen. The lower half of the lens is painted black to make it completely opaque. Illustrate the ray diagram to show the ima
This depends on the arrangement of a beam or column. for a simply supported beam with a point load in the centre of the beam Mmax = WL/4 and will occur at centre span W is the lo
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