1. A 1400 kg car goes around a corner with a radius of curvature= 60m. a)...

1. A 1400 kg car goes around a corner with a radius of curvature= 60m.

a) if the coefficient of static friction between the tires and the roads is 0.800 what is the maximum speed the driver can go before skidding. the curve is unbanked/flat.

2. A 2.40kg uniform rod of length of .750m rotates about its center. At t=0, its angular speed =2.50 rad/sec. It smoothly increases its rotation rate with an acceleration a=1.50 rad/s^2

a) what is its angular speed at t=6.50 seconds

b) how many radians would a spot on the rod have gone during those 6.50 seconds

c) what is the linear speed at t=6.50 seconds at the spot at the end of the rod

d) find the force that would need to be applied tangentially to the end of the rod have this acceleration

Expert Solution

genius_generous answered 8 months ago

Physics Homework: 1) A 1400 kg car goes around the corner at a constant speed of...

Physics Homework: 1) A 1400 kg car goes around the corner at a constant speed of 15.0 m/s. If the centripetal acceleration is 5.00 meters per second per second, what is the radius of the corner? 2) A 75 kg box is pushed across a level floor. If the force required to maintain constant velocity is 255 N, what is the coefficient of kinetic friction?

A racing bus rounds a corner on a banked bus-racing track. The radius of curvature of...

A racing bus rounds a corner on a banked bus-racing track. The radius of curvature of the turn is R and the curve is banked with a grade G. If the coefficient of static friction between the tires and the road is μ, determine the range of speeds at which the bus can take the turn without slipping off the road. [Answer: √ (?−?)/(1−??) < ? √?? < √ (?+?)/(1+??) ]

A 950 kg car turns around a curve of a radius 30 m on a level...

A 950 kg car turns around a curve of a radius 30 m on a level road. If the coefficient of static friction between the tires and the road is 0.55, how fast can the car go around the curve without sliding?

6. A motor car, of a total mass 1400 kg, running in top gear at 55...

6. A motor car, of a total mass 1400 kg, running in top gear at 55 km/h, passes on to a rsing gradient of 1 in 20 at that speed. The road and other resistances may be taken as constant at 270 N/t. With condition unchanged, the speed falls uniformly to 40 km/h in a distance of 360 m. An intermediate gear is then engaged for which the speed ratio between the engine and the road wheels is 9:1 and...

A bubble is sphere with 10 mm radius and a density of 1.0 kg/m^3. This goes...

A bubble is sphere with 10 mm radius and a density of 1.0 kg/m^3. This goes up in a glass of water which has Pwater=0.95 g/cm^3. It starts at the bottom of a glass which is 10 cm tall. Cd=0.8 Hypothesize how long it would take the bubble to rise to the top of the glass. Draw a complete force diagram of the bubble, including weight, buoyancy and drag forces. Make sure your coordinate axis points in the direction of...

A roller coaster car with its passengers has a mass of 220 kg and it goes...

A roller coaster car with its passengers has a mass of 220 kg and it goes through a series of horizontal and vertical curves. A. Draw the free body diagrams for the car going around a horizontal curve, the bottom of a vertical loop, and the top of a vertical loop in which the cart is upside down. Indicate the direction of the acceleration on each diagram. B. If the car is moving at 25 m/s what is the smallest...

Describe the effect of the radius of curvature of a conductor on the concentration of charges

A car drives around a curve with radius 420 m at a speed of 37 m/s....

A car drives around a curve with radius 420 m at a speed of 37 m/s. The road is banked at 5.4°. The mass of the car is 1500 kg. (a) What is the frictional force on the car? (b) At what speed could you drive around this curve so that the force of friction is zero?

An upright object is placed in front of a concave mirror. The radius of curvature of...

An upright object is placed in front of a concave mirror. The radius of curvature of mirror is 40 cm. (a) Where should the object be placed in order to obtain an image that is twice as large as the object? (b) Is the image upright or inverted? SHOW ALL STEPS & DIAGRAM

A small car might have a mass of around 1000 kg and a coefficient of static...

A small car might have a mass of around 1000 kg and a coefficient of static friction of about 0.9. - What is the largest possible force that static friction can exert on this car? (in N) - What is the smallest possible force that static friction can exert on this car? - Describe situations when each of the above cases would occur.

Question