WorksheetsMechanical Engineering
Total questions: 15
Worksheet time: 4hrs 45mins
Among follows, select vector quantities
Displacement
Distance
Velocity
Speed
Force
Among the following which is a standard SI unit
Tonne
Pound
Liter
Galloon
What is the 10 notation of the following:
150 MW (MegaWatt)
1.5 x 10 W
15 ×102 kW
1.5 ×109 W
1.5×108 W
A sports car was measured to have 8.7 ± 0.05 m length. What is the absolute error of the measurement: (a) m
(answer in numbers only)
A sports car was measured to have 8.7 ± 0.05 m length. What is the relative error of the measurement: (a) m
(answer in numbers only, correct up to 3 decimal places)
A sports car was measured to have 8.7 ± 0.05 m length. What is the percentage error of the measurement: (a) %
(answer in numbers only, correct to 1 decimal place)
Add the following to the correct SI unit for length:
12 cm + 7 m + 2.3 ×105 μm = (a) m
(answers in numbers only)
Siva is having a morning exercise. From rest, he sprint to a speed of 40 m/s in 5 seconds. What is the acceleration of Siva
30 ms−2
8 ms−2
2 ms−2
7 ms−2
A car drives with a constant speed of 100 kmh. How long will it takes to travel a distance of 100 km.
Answer: (a) hour
(answer must be in number correct to 1 decimal place)
*kmh = kilometers per hour
A helicopter pilot tries to land on helipad. The helicopter was originally 50 m height from the landing pad with a vertical velocity of 50 m/s. What deceleration value needed for the pilot to perform smooth landing (to reach zero velocity just as the helicopter reaches the ground).
Answer: (a) m/s2
*answers in number only
*value only without sign (e.g.: if your answer is -10 m/s2 , just write 10)
Rahim was riding his motorcycle at a velocity of 20 m/s when the fuel runs out and the motorcycle start slowing down with constant deceleration of 2 m/s. How far will the motorcycle travel before coming to rest?
100 m
10 m
1 km
20 m
A lorry drove with a constant speed of 110 kmh. How far can it travel in 2.5 hours?
Answer: (a) km
*kmh: kilometers per hour
(answers in numbers only)
A string with 1 meter length is stretched with a load of 10 kg. The string is stretched by 0.5 cm length. Find the strain exerted onto the string.
0.005
1
5
10
A load of 25 kg is rested on a piece of plank with surface area of 5 m2. Assuming the forces from the load are equally distributed onto the plank surface. Calculate the stress exerted onto the plank. (Gravitational acceleration: 9.8 m/s2)
Answer: (a) N/m2
A cable with a cross sectional area of 5 x 10-2 m2 is used to sustain a load for construction. The cable originally have a length of 5 m extended to 5.05 m after a load of 100 kg was put at one of its end. Calculate the Young's Modulus of the cable. (Gravitational acceleration, g = 10 m/s2).
Answer: (a) x 106 N/m2
(in 10 notation form)
