UnityEngine.GameObject does not contain a definition for getComponent

using UnityEngine; using System.Collections;

public class Player : MonoBehaviour {

 public float speed = 50f;

 public float jumpPower = 150f;

 public bool grounded;


 private Rigidbody2D rb2d;



 void Start () 
 {
     rb2d = GameObject.getComponent<Rigidbody2D> (); 
 }

 void Update () 
 {
 
 }

 void FixedUpdate()
 {
     float h = Input.GetAxis ("Horizontal");

     rb2d.AddForce (Vector2.right * speed * h);


 }

}