SAMPLE QUESTIONS
- If x=6-4t+5t^2,if t is time in seconds. Find average velocity, when t=2 and t=5.
- The radius of gyration of a solid disc wheel of uniform thickness is r/sq. root of 2 from the center, where r is the radius of the wheel, calculate the change in kinetic energy in kilo joules in a solid disc fly wheel of 1400 mm, diameter and 1250kg mass. When speed changes from 8π to10π pie radian/sec.
- Two cars A and B start from the same point, car A moves north with the acceleration of 3 m/s^2 for 6 seconds and than moves with uniform velocity and car B moves south with the acceleration of 4 m/s^2 for 5 seconds and than moves with uniform velocity. The total distance to be covered is 1074 m. Find the time required for both the cars to travel the distance
- If the magnitude of resultant of two vectors f1 and f2, of equal magnitude is 1/3 of magnitude of force find the angle between f1 & f2
- If x=9+21t-504t^2;find velocity when t=4 and accn when t=5 respectively.
- If a car starts from rest and gains a velocity of 4.8 in 6 seconds. find the accn and distance travelled by it in 4 seconds.
- The stress=480 Mpa, load=3200n,find the diameter of the wire ,take pi=3.14
- Given data:- mass=600 Kg; acceleration =4.5m/s2 =0.28,g=9.8m/s2.calculate the force.
- A cricket ball is thrown with a velocity of 40 m/s at an angle of 45 deg. Find the total time it remained above ground; take g=9.8 m/s
- What is the angular velocity of an object rotating at a speed of 18 km/hr hanging to string of length 38 cm.
- The block of weight 224 N is resting on a rough plane inclined at an angle of 150 deg to the ground. If coefficient of friction between the block and the plane is 0.24, find the force required parallel to the plane to just move the block.
- A wire has diameter of 2 cm. How much load needs to be suspended from the wire if change in length should be 0.3% of the original length. Youngs modulus of wire is 200 x 109 N/m2. Take value of ∏= 3.14
- A body of mass 10 kg is accelerating at 6m/s^2,what will be the acceleration of another body whose mass is 12 kg.
- A 5.4 kg mass is suspended by a spring of constant is 19.6 N/cm. compute the elongation of the spring assume g= 9.8 m/sec2.
- A force having x component -40 N and y component -60 N, find the magnitude of resultant and its angle.
- A car starts accelerates from rest with an acceleration of 2.5m/s2 at the same instant a bus moving with constant speed 16 m/s passes it in a parallel line. calculate the speed of the car when it over takes the bus and distance travel by car before it over takes the bus.
- A brass object is suspended by a wire from spring balance and it registers a weight of 7 N in air when the brass is lowered into fresh water until submerged the balance shows a weight of 6.17 N find the relative density of brass object.
- A tank with a floor size of 9m× 8m. Contains fresh water (rho=1000kg/m3) to a depth of 4m.find the force acting on long side of tank in kg
- A body moving with initial momentum of 23.1 Kgm/sec and due to collision its momentum changes to 42.9 Kgm/s with in time span of 5 second. What is the force exerted on the body due to collision.
- The block of weight 224 N is resting on a rough plane inclined at an angle of 150 to the ground. If coefficient of friction between the block and the plane is 0.24, find the force to move the block up the plane and the angle of force
- Find the work done in displacing the body by 20 mm using a force of 0.69 kN
- A car having initial velocity of 4 m/s travels a distance of 30 m, the final velocity is 15 m/s, find accn and time required.
- The car starts from rest and gains velocity of 5.4 m/s in 9 seconds. find the distance travelled by the car between 2 and 5 seconds
- Find the average force acting on a body of mass 92 kg and attaining velocity 36 m/s in 500 milliseconds.
- A body of mass 18 kg falls freely under gravity. Find the impulsive force after 12 seconds in Newton.