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A particle moves, so that the distance (s) in meters travel after time (t) seconds is given by s=f(t). Find the expression for velocity and acceleration, if s=cos2πt + sin2πt at t=1 second and π=180°
A sagging floor is jacked up and a steel girder 10.0 m long whose cross-sectional area is 6.0 inches2 is put in place underneath. when a jack is removed, a sensitive strain gauge that shows that the girder has been compressed by 0.0080 cm. Find the load the girder is supporting. (use metric system units)
The position of particle is given as =3-4t+3t2m,what is the instantaneous acceleration at t=2s
Does the water demsity change?
The relation (3t=3x+6) describes the displacement of a particle in one direction. Where x is in metres and t in seconds. Find the displacement when the velocity is zero
an elementary particle is projectedin a dark hole, it is spirally and its position is defined as r=(t^2+7t)i-e^-3tj+7sin4t. find its velocityand accelerationat t=0, t=1 and at what time is particle at rest
an elementary particle is projectedin a dark hole, it is spirally and its position is defined as r=(t^2+7t)i-e^-3tj+7sin4t. find its velocityand accelerationat t=0, t=1 and at what time is particle at rest
A steel cable whose cross sectional area is 2.5 cm2 supports a 1,000 kg elevator. The elastic limit of the cable is 3.0 X 108 Pa. What is the maximum upward acceleration that be given the elevator if the tension in the cable is to be no more than 20 % of the elastic limit?
What is the minimum diameter of an Al wire able to support a 7.0 kg mass without exceeding its elastic limit?
The diameter of a certain spherical metal ball is 8.23 cm and has a mass of 2.35 kg. It has an enclosed air bubble inside whose diameter is 1.80 cm. What is the metal most likely be made out of?
