The magnitude of the force of kinetic friction acting on an object is **f _{k} = μ_{k}N**, where μ

_{k}is the coefficient of kinetic friction. For most surfaces, μ

_{k}is less than μ

_{s}.

### What is the maximum speed with which a car can negotiate?

The maximum speed with which a vehicle can negotiate a cuved road, which is banked at the angle θ=tan-1(0.24) is **54km/hr**.

### How do you find the centripetal force?

According to Newton's second law, **a = v² / r** is the centripetal acceleration's formula. Take a look at the centripetal force's diagram to visualize what centripetal force definition is all about: We can also rewrite the centripetal force equation by replacing the velocity with the angular velocity ω : F = m * ω² * r .

### What could be the reason a car moving on a horizontal?

Centripetal force acts inward (towards the centre of the circular turn). This is provided by the frictional force. When the speed is large, required centripetal force to stay in the circular path increases. But **friction is unable to provide large centripetal force and hence the body is thrown outwards.**

### When the road is dry and the coefficient of friction is u?

When the road is dry and the coefficient of friction is μ, **the maximum speed of a car in a circular path is 10 ms^–1**. When the road is dry and the coefficient of friction is μ, the maximum speed of a car in a circular path is 10 ms^{–}^{1}.

### What do you mean by banking of a curved road?

Banking of roads is defined as **the phenomenon in which the edges are raised for the curved roads above the inner edge to provide the necessary centripetal force to the vehicles so that they take a safe turn**.

### What will be the maximum speed of a car when it safely driven along a curved road of radius 100 m ?( G 10 m/s 2 μ 0.2 *?

The maximum speed of car which can be safely driven along a curve of radius 100 m is **14 m/s**. So, the maximum speed of car is 14 m/s.

### What is the maximum speed of a car on a curved friction of the radius of Tyres if the TYRE is 0.4 g.8 g.8 MS 2 ?

The maximum speed vmax=μgr =0. 4×9. 8×30 =**10.** **84 m/s**.

### When a car takes a circular turn on a banked road the centripetal force is provided by?

### What is the need for banking of road?

Banking of road is done **to ensure the safety of cars on curved roads**. As the speed of the vehicle increases, the centripetal force required for circular motion also increases. The maximum speed of the vehicle depends only on the coefficient of friction between the wheels and road.

### What is meant by banking of roads obtain an expression for the maximum speed?

When the road is banked the normal force provided by the road on the car provides a component which is in the direction of the centripetal force. Hence, when the road is banked, **it is easier for a car to take the turn at a higher speed**.

### What is the maximum speed at which a car can round a curve of 30m?

The maximum speed of a car on a road turn of radius 30m, if the coefficient of friction between the tyres and the road is 0.4, will be. A) **9.84 m/s**.

### What is the maximum value of static friction called?

### What is the magnitude of the turning friction?

The magnitude of the force of kinetic friction acting on an object is **f _{k} = μ_{k}N**, where μ

_{k}is the coefficient of kinetic friction. For most surfaces, μ

_{k}is less than μ

_{s}.

### What will be the maximum speed of car on a road?

Speed limits in India vary by state and vehicle type. In April 2018, the Union Ministry of Road Transport and Highways fixed the maximum speed limit **on expressways at 120 km/h, for national highways at 100 km/h, and for urban roads at 70 km/h for M1 category of vehicles**.

### How do you calculate maximum speed GCSE?

**Worked Example**

- Step 1: State the known values. Maximum speed, v
_{max}= 12 m s^{-}^{1}Amplitude, A = 1.4 m. - Step 2: Write down the equation. v
_{max}= ωA. - Step 3: Rewrite angular velocity in terms of frequency f. ω = 2πf. v
_{max}= 2πfA. - Step 4: Rearrange for frequency, f.
- Step 5: Substitute in the values.

### What is the group number of Fr?

### What are the three types of valve control?

**There are three primary types of control valve trim:**

- Snap Trim (also referred to as Quick-Opening trim)
- Nominal Trim (also referred to as Linear trim)
- Equal Percentage Trim.

### What is group 14 called on the periodic table?

### What are the unsolved problems in science?

**The 7 biggest unsolved mysteries in science**

- Turbulence. Turbulence isn't a new word.
- A simulation snapshot showing turbulence in a jet.
- The Origin of Life.
- Abiogenesis.
- Protein Folding.
- DNA-binding domain.
- A Quantum Theory of Gravity.
- Riemann Hypothesis.

### How do you reverse percentages?

Reverse percentages (or inverse percentages) means working backwards to find an original amount, given a percentage of that amount. We can do this using a calculator by **taking the percentage we have been given, dividing to find 1% and then multiplying by 100 to find 100%** .

Dated : 21-Jul-2022

Category : Education