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Q1. Motorcycle engine provides the torque of 30 Nm at 2500 rpm. The moment of inertia of each wheel is 1.0 kg m and engine parts 0.2 kg m. Effective diameter of the rear wheels is 620 mm and the total mass of the machine and rider is 200 kg. If the reduction of the speed of the engine and the rear wheels are 9:1 and the resultant impact resistance and wind roll is considered equal to 180 N, find the speed and acceleration of the motorcycles at engine speeds above. Q2. A vehicle has a power of 65 kW to move up the hill lined with bushes. The slope of the hill is 1 in 6.5 and scrub resistance of 200 N. Efficiency of power transmission from the engine to the wheels is 92% and the gear ratio used is 5:1. All four wheels of the vehicle has a radius of 0.3m, radius of gyration of 0.2 m and a mass each wheel is 23 kg. The moment of inertia of the engine parts that move is 1 kg m 2 . The total mass of the vehicle, including the wheels is 1350 kg. Find the acceleration of the vehicle up the hill to the power of 65 kW at 3955 rpm engine speed. Q3. A vehicle with a capacity to move up a gradient of 15 of the dead. Gear ratio is used to produce wheel spin 400 rpm when the engine speed of 2000 rpm. The engine produces maximum torque of 500 Nm and used gear transmission efficiency is 90%. Determine the minimum time for the vehicle to reach the summit, at a distance of 100 m, if the movement is hampered by a force of 300 N. Regular vehicle data are given as follows : • the mass of the vehicle and load = 2000 kg, • spokes = 0.4 m • the total moment of inertia of the wheel = 20 kg m2 • The total moment of inertia of the engine = 2 kg m2

Q1. Motorcycle engine provides the torque of 30 Nm at 2500 rpm. The moment of inertia of each wheel is 1.0 kg m and engine parts 0.2 kg m. Effective diameter of the rear wheels is 620 mm and the total mass of the machine and rider is 200 kg. If the reduction of the speed of the engine and the rear wheels are 9:1 and the resultant impact resistance and wind roll is considered equal to 180 N, find the speed and acceleration of the motorcycles at engine speeds above.

Q2. A vehicle has a power of 65 kW to move up the hill lined with bushes. The slope of the hill is 1 in 6.5 and scrub resistance of 200 N. Efficiency of power transmission from the engine to the wheels is 92% and the gear ratio used is 5:1. All four wheels of the vehicle has a radius of 0.3m, radius of gyration of 0.2 m and a mass each wheel is 23 kg. The moment of inertia of the engine parts that move is 1 kg m 2 . The total mass of the vehicle, including the wheels is 1350 kg. Find the acceleration of the vehicle up the hill to the power of 65 kW at 3955 rpm engine speed.

Q3. A vehicle with a capacity to move up a gradient of 15 of the dead. Gear ratio is used to produce wheel spin 400 rpm when the engine speed of 2000 rpm. The engine produces maximum torque of 500 Nm and used gear transmission efficiency is 90%. Determine the minimum time for the vehicle to reach the summit, at a distance of 100 m, if the movement is hampered by a force of 300 N. Regular vehicle data are given as follows : • the mass of the vehicle and load = 2000 kg, • spokes = 0.4 m • the total moment of inertia of the wheel = 20 kg m2 • The total moment of inertia of the engine = 2 kg m2

Q1. Motorcycle engine provides the torque of 30 Nm at 2500 rpm. The moment of inertia of each wheel is 1.0 kg m and engine parts 0.2 kg m. Effective diameter of the rear wheels is 620 mm and the total mass of the machine and rider is 200 kg. If the reduction of the speed of the engine and the rear wheels are 9:1 and the resultant impact resistance and wind roll is considered equal to 180 N, find the speed and acceleration of the motorcycles at engine speeds above.

Q2. A vehicle has a power of 65 kW to move up the hill lined with bushes. The slope of the hill is 1 in 6.5 and scrub resistance of 200 N. Efficiency of power transmission from the engine to the wheels is 92% and the gear ratio used is 5:1. All four wheels of the vehicle has a radius of 0.3m, radius of gyration of 0.2 m and a mass each wheel is 23 kg. The moment of inertia of the engine parts that move is 1 kg m 2 . The total mass of the vehicle, including the wheels is 1350 kg. Find the acceleration of the vehicle up the hill to the power of 65 kW at 3955 rpm engine speed.

Q3. A vehicle with a capacity to move up a gradient of 15 of the dead. Gear ratio is used to produce wheel spin 400 rpm when the engine speed of 2000 rpm. The engine produces maximum torque of 500 Nm and used gear transmission efficiency is 90%. Determine the minimum time for the vehicle to reach the summit, at a distance of 100 m, if the movement is hampered by a force of 300 N. Regular vehicle data are given as follows : • the mass of the vehicle and load = 2000 kg, • spokes = 0.4 m • the total moment of inertia of the wheel = 20 kg m2 • The total moment of inertia of the engine = 2 kg m2

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